CATEngine Parts

4R8831 Seal Gp- Crankshaft — Cat Engine: 3116 3126

Name: 4R8831 Seal Gp- Crankshaft — Cat Engine: 3116 3126
Brand: CAT
SKU: 4R8831
Availability: InStock

This is a crankshaft seal group designed to prevent oil leakage from the engine's crankshaft seal area, maintaining proper lubrication and engine integrity. It is manufactured to meet stringent OEM standards, ensuring superior sealing performance compared to a worn or damaged seal that allows oil passage. Operators may notice oil spots under the equipment, a persistent burning oil smell, or a drop in oil level if this seal fails.

Seal Gp- Crankshaft – Part No 4R8831 – CAT Spare Part

Part Specifications

Brand	CAT
Category	Engine Parts
Condition	Aftermarket — OEM Specification
Dispatch	Same-day from Mumbai (before 3 PM IST)
GST Invoice	Available — all orders
Export Docs	Commercial invoice, packing list, COO

Compatible Models

TRUCK
Engine: 3116
3126
3126B
3126e

Always verify with serial number before ordering.

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Parts Trading Company · Mumbai, Est. 1956 · Same-day dispatch · Ships worldwide · GST invoice included

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Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part Type	Crankshaft Seal Group
Material	NBR rubber and metal
Application	Engine crankshaft sealing
Service Life	Replace as needed based on inspection
Compatibility	OEM specification
Condition	New — OEM specification aftermarket

Failure Symptoms

The first sign of a failing crankshaft seal is typically visible oil leakage around the crankshaft pulley. If left unaddressed, the leak will worsen, leading to significant oil consumption and potential lubrication issues. Continued operation with a severely leaking seal can lead to premature engine wear and damage.

Installation Tip

Ensure the crankshaft surface is perfectly clean and free of any burrs or scoring before attempting installation. Avoid using excessive force or improper tools, which can easily damage the new seal during seating.

Service Note

Inspect the crankshaft for wear or damage, and clean the seal housing thoroughly before installing the new seal.

4R8831 Seal Gp- Crankshaft — Cat Engine: 3116 3126

Compatible Models

Related CAT Parts

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Installation & Application Notes

Failure Symptoms